117842117 has 2 divisors, whose sum is σ = 117842118. Its totient is φ = 117842116.

The previous prime is 117842107. The next prime is 117842149. The reversal of 117842117 is 711248711.

It is an a-pointer prime, because the next prime (117842149) can be obtained adding 117842117 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81830116 + 36012001 = 9046^2 + 6001^2 .

It is a cyclic number.

It is not a de Polignac number, because 117842117 - 2⁸ = 117841861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117842107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58921058 + 58921059.

It is an arithmetic number, because the mean of its divisors is an integer number (58921059).

Almost surely, 2^117842117 is an apocalyptic number.

It is an amenable number.

117842117 is a deficient number, since it is larger than the sum of its proper divisors (1).

117842117 is an equidigital number, since it uses as much as digits as its factorization.

117842117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3136, while the sum is 32.

The square root of 117842117 is about 10855.5109046051. The cubic root of 117842117 is about 490.2679597823.

The spelling of 117842117 in words is "one hundred seventeen million, eight hundred forty-two thousand, one hundred seventeen".